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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id e12-20020a056602044c00b006889ea7be7bsm3727688iov.29.2022.09.04.14.42.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Sep 2022 14:42:50 -0700 (PDT) From: Jim Cromie To: jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: daniel.vetter@ffwll.ch, seanpaul@chromium.org, robdclark@gmail.com, linux@rasmusvillemoes.dk, joe@perches.com, Jim Cromie Subject: [PATCH v6 42/57] dyndbg: shrink lineno field by 2 bits Date: Sun, 4 Sep 2022 15:41:19 -0600 Message-Id: <20220904214134.408619-43-jim.cromie@gmail.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220904214134.408619-1-jim.cromie@gmail.com> References: <20220904214134.408619-1-jim.cromie@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" struct _ddebug.lineno int:18 is bigger than we need: git ls-files | grep -P '\.c$' | xargs wc -l | sort -n | tail -n20 ... 22553 drivers/scsi/lpfc/lpfc_sli.c 28593 drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c 46300 drivers/net/wireless/realtek/rtw88/rtw8822c_table.c 48725 drivers/net/wireless/realtek/rtw89/rtw8852a_table.c 1386670 total ... All but one of the biggest of these are just .data tables, and have no code, so would never need a pr_debug(). drivers/scsi/lpfc/lpfc_sli.c, at ~22k lines, would be encodable with 15 bits, but lets just shrink to 16 bits for now. RFC: Is this tantamout to a "don't write files with >64kloc" policy ? Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index dcc0e8cc2ef0..c05148dab367 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -30,7 +30,7 @@ struct _ddebug { struct _ddebug_site *site; /* format is always needed, lineno shares word with flags */ const char *format; - const unsigned lineno:18; + const unsigned lineno:16; #define CLS_BITS 6 unsigned int class_id:CLS_BITS; #define _DPRINTK_CLASS_DFLT ((1 << CLS_BITS) - 1) --=20 2.37.2